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West Milford, Passaic County · New Jersey
Can you build an ADU in West Milford, NJ?
An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether West Milford allows one, and how big, comes down to the town’s zoning and your specific lot. Here’s what we know, and how to check yours.
West Milford zoning & ADU rules
Max height (residential)
35 ft
Max stories
2.5
We've mapped West Milford's residential zoning. An ADU on your lot follows the town's accessory-structure standards: check your specific address for the exact size, height, and setback it allows.
Source: Chapter 500, Article III, Section 8 · https://ecode360.com/WE2651 (via Composite Zoning 2024 (NJ), ArcGIS FeatureServer, accessed 2026-08-11)
Accessory dwelling units (ADUs) in West Milford, New Jersey
New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, West Milford (Passaic County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in West Milford, how big, and how tall depends on the town's ordinance and your specific lot. We've mapped West Milford's residential zoning: buildings are capped around 35 ft / 2.5 stories. Your ADU follows the town's accessory-structure standards on top of that.
Backyard homes that could fit a West Milford lot
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ADU FAQ
Can I build an ADU in West Milford, NJ?
West Milford sets its own ADU rules, and we've mapped its residential zoning. Whether your specific lot qualifies, and how big an ADU it allows, comes down to your parcel's size, setbacks, and the accessory-structure standards. Check your West Milford address to see for sure, free.
How much does an ADU cost in West Milford?
A detached ADU in West Milford typically runs $150,000 to $300,000+ all-in depending on size, site, and finishes. Because the build is financed, you can add rental income to your West Milford property without paying the build cost up front, and the rent helps carry the loan.
Do I need to live on-site to build an ADU in West Milford?
Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check West Milford's specific ordinance for you when you run your address.
See exactly what your West Milford lot allows
Enter your address and we read West Milford’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.
Check if your West Milford lot qualifies, free